Halloween Pumpkin Science Experiment

Watch a Carved Pumpkin Bubble Over With a Kitchen-Chemistry Reaction!

Hands-on Chemistry.

Built-in Fun.

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Get Started with This Bubbling Fall Classroom Activity!

Mix 3 ingredients inside a carved pumpkin, then watch an acid-base reaction turn it into a bubbling, oozing experiment right through its Jack-O'-Lantern face. You’ll also get access to over 100 ready-to-use science activities! (No credit card required!)

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Easy to follow step-by-step video:

See what teachers & students have to say:

"My students were shrieking with excitement as the foam poured out of the pumpkin's mouth. It's the first time 'chemical reaction' meant something real to them instead of just a vocabulary word."

— Ms. Reyes, 4th Grade Teacher

"I didn't know baking soda and vinegar could make something ooze like that! We tried it again with more vinegar and it overflowed even more."

— Maya L., 4th Grade Student

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